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List: kfm-devel
Subject: Re: Interesting thing with DNS requests
From: Thiago Macieira <thiago () kde ! org>
Date: 2006-12-09 17:01:23
Message-ID: 200612091801.35521.thiago () kde ! org
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Maksim Orlovich wrote:
>Are you sure a global cache is needed to help things? A per-slave cache
>may be able to get much of the benefits, considering KIO tries to limit
>the number of I/O slaves per process, even if it's something trivial
> like a TTL of 30 seconds or such.
A trivial modification to KIO::TcpSlaveBase would make it cache the last
result, so that a new connection to the same address last used wouldn't
generate a lookup.
If only one IOSlave is used, this will defeat the purpose of round-robin
DNS entries, though.
>I am also very, very, concerned that some people suffer so badly due to
>IPv6 support, which at the moment is basically just a geek feature, and
>seems poorly supported by tons of DNS servers.
If people don't want IPv6, they shouldn't turn it on. I remember that
distributions would ship with
alias net-pf-10 off
in their modprobe.conf a couple of years ago, to prevent KDE and other
programs from attempting IPv6 connections. Why did they remove that?
The problem also happens in other, non-KDE programs.
--
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
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